// Tencent is pleased to support the open source community by making TNN available.
//
// Copyright (C) 2020 THL A29 Limited, a Tencent company. All rights reserved.
//
// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
//
// https://opensource.org/licenses/BSD-3-Clause
//
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the 
// specific language governing permissions and limitations under the License.

#ifndef TNN_SOURCE_TNN_DEVICE_CPU_CPU_DEVICE_H_
#define TNN_SOURCE_TNN_DEVICE_CPU_CPU_DEVICE_H_

#include <map>
#include <memory>
#include <cstring>

#include "tnn/core/abstract_device.h"

namespace TNN_NS {

// @brief CpuDevice create cpu memory and cpu layer acc

class CpuDevice : public AbstractDevice {
 public:

  explicit CpuDevice(DeviceType device_type);

  ~CpuDevice();

  virtual BlobMemorySizeInfo Calculate(BlobDesc& desc);

  virtual Status Allocate(void** handle, BlobMemorySizeInfo& size_info);

  virtual Status Allocate(void** handle, MatType mat_type, DimsVector dims);

  virtual Status Free(void* handle);

  virtual Status CopyToDevice(BlobHandle* dst, const BlobHandle * src, BlobDesc& desc,
                              void* command_queue);

  virtual Status CopyFromDevice(BlobHandle* dst, const BlobHandle * src, BlobDesc& desc,
                                  void* command_queue);

  virtual AbstractLayerAcc *CreateLayerAcc(LayerType type);

  virtual Context *CreateContext(int device_id);

  virtual NetworkType ConvertAutoNetworkType();

  static Status RegisterLayerAccCreator(LayerType type,
                                            LayerAccCreator *creator);

 private:
  static std::map<LayerType, std::shared_ptr<LayerAccCreator>> &GetLayerCreatorMap();
};

//@brief CpuTypeLayerAccRegister register CpuTypeLayerAccCreator
template <typename T>
class CpuTypeLayerAccRegister {
 public:
  explicit CpuTypeLayerAccRegister(LayerType type) {
    CpuDevice::RegisterLayerAccCreator(type, new T());
  }
};

}  // namespace TNN_NS

#endif  // TNN_SOURCE_TNN_DEVICE_CPU_CPU_DEVICE_H_
